Oh dear, I viewed an 07 V50 last evening and looked nicecuntil I drove it, when ever I braked even really generally the ads pump would kick in clicking away and the warning light would come on, yet let it sit at idle and there was no light on.
Then vendor claimed to not know anything about it but if I bought it would be fixed, I've heard that before so I walked but it has led to me asking this:
https://www.volvoforums.org.uk/newre...eply&p=2896437